I'm also having trouble with my Samsung 4k 8000 series tv not reading some of the folders on my USB hard drive. I spent some time with tech support explaining the issue to them and they could not solve the problem. My issue is related to a "No content found" that occurs when accessing folders that have a creation date of 12/31/1969. None of these folders were actually created on that date. Every PC in my house reads the folders with their proper creation date, however, EVERY single Samsung device in my house (two 8000 series tv's, two 7100 series tv's and a Samsung 4k blu-ray player) reads the folders with the wrong date and therefore won't access the files inside the folders. I explained this to the tech and her advice was to purchase a new One Connect box. This is clearly a software issue on Samsung's end. This needs to be resolved!
After a couple yrs with mine and not being I.T. Too stupid , its a glitch , i can always fix mine with a overnight unplug , there proly is a time thing b4 the cpu resets (cmos) or some other CMD , Its still rocking though and im learning to deal with its querks ... Still not a good look Samsung , sort ur hair out too xxx
So I spent 2 hours with XFINITY (COMCAST) they advised this is a Samsung issue everywhere, not just some, but all the time. He wishes they would fix it because he HAD a SAMSUNG and liked it the best. Then he advised me to get a new one. I stated it is NEW, and they laughed.
The solution that worked for me was to go into settings into External Devices Manager (not sure how it is in English, my menu is in Polish) and remove all my phones, tablets etc.
Than I switched off the TV, disconnected the USB drive and turned on my TV. It still works. I hope it helps.
Merry Xmas and Happy New Year
Thanks for your post.
I had the same problem, and it's just solved by these two actions:
1- I've formatted my USB drive with NTFS format.
2- I've reset my TV from menu/ support/ self diagnosis/ reset
Just experienced the problem about an hour ago. I want to confirm that doing a reset fixed the USB issue. Good luck everyone! And Happy Holidays!